Bulletin.



P. DE SILVA.

BULLETIN.

APPLICATION I'ILBD JULY 21, 1909'.

982,940, Patented Jan. 31,1911.

QR. NH: m

cog'wis MAQIS B 0 RS can, WASHINGTON, n, c

FRANK DE SILVA, OF MELROSE HIGHLANDS, MASSACHUSETTS.

BULLETIN.

Specification of Letters Patent.

Application filed July 21, 1909.

Patented Jan. 31, 1911.

Serial No. 508,842.

To all whom it may concern:

Be it known that I, FRANK Dr. SiLvA, a citizen of the United States, anda resident of Melrose Highlands, in the county of Middlesex and State ofMassachusetts, have invented certain new and useful Improvements inBulletins, of which the following is a specification.

My invention relates to improvements in bulletin boards whereon aredisplayed the current prices of marketable securities having fluctuatingvalues, and it more particularly applies to that class of announcementsof price quotations of railroad, mining, electric and kindred stocks andbonds displayed in the exchan es, and it applies to any similartransferable commodities where quotations may be quickly rendered andvalues disclosed.

The objects of my improvement are, first, to produce a bulletin orannouncing board having a field of magnetic force; second, theproduction of a quotation card or tablet equipped to coact by attractiontherewith; third, to secure a quick assemblage of interchangeableelements; fourth, an efficient construction with greater economy; and inother essentials hereinafter specified and particularly defined in theclaims. I attain these objects by the apparatus illustrated in theannexed drawing forming a part of this specification in which:

Figure 1, is a front elevation of a portion of my improved bulletinpartially filled with cards bearing the usual quotations. Fig. 2,denotes a vertical section thereof on line 2-2 of Fig. 1. Fig. 3, is aperspective (substantially full size) of a fragmentary end thereof.Figs. 4 and 5, designate a plan and longitudinal section respectively ofthe card equipment, and Figs. 6 and 7, elevations of the artificial orpermanent magnets.

Corresponding letters of reference indi cate similar features throughoutthe drawing referring to which- A, denotes the embracing frame of anysuitable material and of ornate design as may be desired, the interioror bulletin proper being composed preferably of wooden strips 13 ofinterchangeable construction and laid horizontally and compactlytogether, each strip comprising substantially a molding that may bestuck after any design that the cutters may be given, for my presentpurpose I construct the face of each strip or molding with a projectionC on its upper edge, a depression D immediately below, and practicallycentral :1 further depression I). Said depressions or grooves arecontinuous and finished at the first cutting operation, and areafterward isolated by the vertical right angled grooves F made previousto, or after the assemblage of the strips B as desired, the horizontallydepressed spaces thus presenting an area reetilincar and in proportionto the quotation cards to be displayed. The left end of said depressionsit is desirable to close. I therefore attach the vertical stop-bead orstrips G to the floor of the grooves F at their right side, as wellobserved in Fig. 1, or I may employ the efficient method comprising thestaples H. shown in Fig. 3, either of which assures the verticalalinement of the cards when they are manually placed.

I will now revert to the permanent magnetic equipment comprising barspreferably of steel as at I and of dimensions to fill the length andbreadth of the depressions E. These bars are magnetized, and confined inposition by the screws J to the strips 13 or by brads through the slotsK as preferred, or in any suitable stable manner, all of the spacesbeing thus equipped. (lo-acting with said magnets, I produce the cardsor tablets L their fronts bearing numbers designating the variousquotations of the selling Si'OCh's or bonds in the usual manner, whilethe reverse side is provided with a thin sheet of non-magnetic metal Msecured to the card by overlapping as illustrated, or they may becemented or otherwise attached, this method being feasible in theutilization of old cards with a new board construction, my preferredmanner however, is exemplified in Fig. 3 wherein is shown a pre paredsurface N enameled or otherwise treated to receive the printed orlithographed characters, the exposed metal O assuring the adherence byattraction of the tablet to the magnet in a decipherable position, whilethe intervening space P, permits insertion of the fingers to place andremove the card.

Rearward studs Q receive and secure the assemblage by the screws J, orpreferably as illustrated in Fig. 3, Where the adjacent edges R ofalternate strips are beveled to confine the interposing members B, thusemploying a less number of fastenings, and in part concealing theinterstices in the board should shrinkage occur.

I Would remark, that in the hurried manipulation of the ordinary cardsin the stock exchanges they are rarely in alinement, and frequently fallfrom their assigned positions, and in other ways are objectionable tothe attendant who places them. My improved invention is designed toobviate these difiiculties by producing a card and coiiperatingaccessories that wil.l effect a sure union of the tablets automatically.I do not limit myself to the strict details of construction herein setforth for the mere purpose of illustration except set forth in theappended claims.

Having thus ascertained the nature and operation of my improvedinvention, 1 claim:

1. A bulletin board for the announcement of transactions comprising alongitudinally grooved face, said board being provided with permanentmagnets fixed in said grooves, said board also being provided withvertical depressions having means forming a barrier to the longitudinalgrooves, composite readable elements adapted to be held by said magnetsthese magnets being of greater thickness than said grooves which theyoccupy to afiord space for finger insertion to remove the elementstemporarily coacting with said magnets.

2. A bulletin board composed of separable strips placed horizontallyside by side and having adjacent to the upper edges integral projectionsand also having central longitudinal depressions, a series of permanentmagnets seated in said central depressions, said integral projections ofadjacent strips forming a longitudinal card receiving clepression andmeans vertically positioned to partition said depressions intorectilinear spaces.

3. A bulletin board for the display of transactions in bonds and similarcommodities consisting of a longitudinally and vertically grooved frontor face, a series of magnets occupying said longitudinal grooves andmeans .in the vertical grooves forming a barrier tothe longitudinalgrooves, in combination therewith a series of tablets having numericaldesignations on their faces and a rearward surface co-acting with saidmagnets to secure them in a readable position.

4:. A series of molded strips of suitable material placed side by sideto form a bulletin board the contiguous edges of each molding beveled toconfine the alternate molding and provided with vertical groovesseparating said bullet-in front into substantially rectilinear spaces,permanent magnets situate in said spaces, in combination with tabletshaving decipherable faces and provided with rearward surfaces adapted tobe held by said magnets to secure temporarily said tablets in positionfor interpretation.

5. A bulletin board comprising a series of moldings each molding havingupon its face contiguous to the edges thereof integral depressions forthe reception of removable character bearing elements and additionalcentral longitudinal depressions, said members being provided withgrooves vertically arranged to segregate said depressions, a

plurality of permanent magnets therein secured, a series of displaycards bearing readable symbols adapted to be held by said magnets andadapted to be removed from said magnets by inserting the fingersbeneatlf the upper and lower edges of said cards, said magnets being ofgreater thickness than the depth of the depressions receiving them tofacilitate said card removal.

In testimony whereof I have afiixed my signature, in presence of twowitnesses.

FRANK DE SILVA.

\Vitnesses JULIUS M. SCHULTZ, Jr., ANDREW J. CUNNINGHAM.

